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xen-devel
Re: [Xen-devel] Xen 4.0.0x allows for data corruption in Dom0
On Sun, 2010-03-07 at 11:12 -0500, Pasi Kärkkäinen wrote:
> On Sun, Mar 07, 2010 at 02:39:09PM +0000, Keir Fraser wrote:
> > On 07/03/2010 14:36, "Pasi Kärkkäinen" <pasik@xxxxxx> wrote:
> >
> > >> Tried a few times and no luck reproducing so far. I hope some other
> > >> people
> > >> on the list also will give it a go, since it's so easy to try it out.
> > >>
> > >
> > > I'm able to reproduce this with xen/master 2.6.31.6 dom0 kernel (from
> > > 2010-02-20),
> > > but I'm not able to reproduce it with the current xen/stable 2.6.32.9.
> > >
> > > I'll try with the most recent 2.6.31.6 dom0 kernel aswell..
> >
> > Thanks Pasi!
> >
>
> It seems to happen with the latest xen/master 2.6.31.6 aswell!
Does this look to you like we're corrupting memory or on-disk storage?
E.g. does a
$ dd if=/dev/zero bs=1M | hexdump -C
have the same issue?
I have some initial trouble with the idea that zero.read() in a PV domU
somehow unlearned to scrub a 1M user buffer.
Thanks,
Daniel
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